Vickie Plourde and I have just published a commentary in connection with the publication of a report by Nagasawa et al. (2015) in the journal Science. In this paper, Nagasawa et al. suggest that human-dog relationships is the result of a coevolution process involving mutual gaze between humans and dogs, which would link to the secretion of oxytocin, a hormone that regulates many forms of social behaviour. Without going into details, Vickie and I have made ​​a number of critics that cast doubt on that conclusion. I invite you to read this critical commentary published in the journal Frontiers in Psychology. Here is the web link to access the text :